Datasheet > FX929BD2

FX929BD2

更新时间： 2024-09-15 20:42:15

品牌	Logo	应用领域
CMLMICRO		电信光电二极管电信集成电路
页数	文件大小	规格书
47页	1631K
描述
Modem-Support Circuit, CMOS, PDSO24,

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技术参数
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FX929BD2 技术参数

生命周期：	Obsolete	包装说明：	SOP, DIP24,.6
Reach Compliance Code：	compliant	HTS代码：	8542.39.00.01
风险等级：	5.74	JESD-30 代码：	R-PDSO-G24
长度：	15.4 mm	功能数量：	1
端子数量：	24	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	DIP24,.6
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
电源：	3.3/5 V	认证状态：	Not Qualified
座面最大高度：	2.65 mm	子类别：	Modems
最大压摆率：	0.01 mA	表面贴装：	YES
技术：	CMOS	电信集成电路类型：	MODEM-SUPPORT CIRCUIT
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
宽度：	7.5 mm	Base Number Matches：	1

FX929BD2 数据手册

CML Semiconductor Products

4-Level FSK Modem Data Pump FX929B

Advance Information

D/929B/1 May 1997

Features

Applications

4800 to 19200 b/s Operation

RCR STD-47 and RD-LAP* Systems

Two-Way Paging Equipment

Mobile Data Systems

Full Packet Data Framing

4-Level FSK Data Modulation

Low Power, 2.5mA at 3.3V

Flexible Operating Modes

Powersave Option

Wireless Telemetry

DataTAC^ÒTerminals

Portable Wireless Data Equipment

*Radio Data-Link Access Procedure (RD-LAP) is a data communications air interface protocol developed by Motorola Inc.

1.1

Brief Description

The FX929B is a CMOS integrated circuit that contains all of the baseband signal processing and Medium

Access Control (MAC) protocol functions required for a high performance 4-level FSK Wireless Packet Data

Modem. It interfaces with the modem host processor and the radio modulation/demodulation circuits to deliver

reliable two-way transfer of the application data over the wireless link. The FX929B is backwards compatible

with the FX929A but offers better performance during radio link fading and selectable Tx symbol shapes.

The FX929B assembles application data received from the processor, adds forward error correction (FEC) and

error detection (CRC) information and interleaves the result for burst-error protection. After adding symbol and

frame synchronisation codewords, it converts the packet into a filtered 4-level analogue baseband signal for

modulating the radio transmitter.

In receive mode, the FX929B performs the reverse function using the analogue baseband signals from the

receiver discriminator. After error correction and removal of the packet overhead, the recovered application

data is supplied to the processor. Any residual uncorrected errors in the data will be flagged. A readout of the

SNR value during receipt of a packet is also provided.

The FX929B uses data block sizes and FEC/CRC algorithms compatible with the RD-LAP and RCR STD-47

over-air standards. The device is programmable to operate at most standard bit-rates from a wide choice of

Xtal/clock frequencies.

ã 1997 Consumer Microcircuits Limited

12 3 4 5 6 7...47

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